It's hard to tell, since omni and bi have a lot of overlap, and both can have a prefference to either masculate or femine presentaion, so either omni or bi could work. I'm the same way as you and I identify as omni because I've always felt like the term fit me better, but everyone is different. I think it's best to find what fits you best! And remember labels are just labels: they can and often do change, so don't stress about figuring out the correct label. I started off identifying as pan but once I realized that wasn't quite right I changed. Just go with what feels right and don't be afraid to label yourself however you feel <3
